(the area above the handle), @code{below-handle} (the area below the
handle), @code{up} (the up arrow at one end of the scroll bar), or
@code{down} (the down arrow at one end of the scroll bar).
-@c The `top', `bottom', and `end-scroll' codes don't seem to be used.
+@c The 'top', 'bottom', and 'end-scroll' codes don't seem to be used.
@end table
@vindex mouse-wheel-up-event
@vindex mouse-wheel-down-event
-This kind of event is generated only on some kinds of systems. On some
+This kind of event is generated only on some kinds of systems. On some
systems, @code{mouse-4} and @code{mouse-5} are used instead. For
portable code, use the variables @code{mouse-wheel-up-event} and
@code{mouse-wheel-down-event} defined in @file{mwheel.el} to determine
@end smallexample
The frame with input focus might not take up the entire screen, and
-the user might move the mouse outside the scope of the frame. Inside
+the user might move the mouse outside the scope of the frame. Inside
the @code{track-mouse} special form, that produces an event like this:
@smallexample